Wrench.



M. G. HOOKER.

WRENCH.

APPLICATION FILED 11111.5, 1914.

1, 1 01,442. Patented June 23, 1914.

2 SHEETS-SHEET 1.

' M. 0. HOOKER.

W GH- APPLICATION PI 1) JAN. 5, 1914. I 1,101,442. Pate Jun ,1914,

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anvewlioz atto'uwga UNITED STATES PATENT orrion.

MARCUS C. HOOKER, 0F SNOIEOMISI-I, WASHINGTON.

WRENCH.

To all whom it may concern Be it known that I, MARCUS C. HOOKER, a citizen of the United States, residing at Snohomish, in the county of Snohomish and State of Washington, have invented certain new and useful Improvements in lVrenches; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to improvements in wrenches and more particularly to those having pawl and ratchet mechanisms for rotating the jaws of the wrench to turn the nut.

The primary object of the invention is to provide a wrench of this character so constructed that the jaws thereof are free to turn entirely around with the nut, even though the end of the bolt may project a considerable distance beyond'said nut.

A secondary object is to provide simply constructed and efficient means for throwing the pawls in and out of engagement with the ratchet teeth.

WVith the above objects in view, the invention resides in certain novel features of construction and combination herein described and claimed and shown in the drawings, wherein Figure l is a plan view of my improved wrench; Fig. 2 is an edge view thereof; Fig. 3 is a vertical section on the line 33 of Fig. 1. Fig. 1 is a similar view on the line 4% of Fig. 2; Fig. 5 is a similar view on the line 55 of Fig. 2; Fig. 6 is a detail perspective view of one of the pawls; Fig. 7 is a similar view of the pin for actuating the pawls; Fig. 8 is a side view of the movable jaw of the wrench; Fig. 9 is a similar view of the fixed jaw thereof and showing the ratchet carried by the same; and Fig. 10 is a plan view of the parts shown in Fig. 9.

In the accompanying drawings, I have shown the nut engaging head H as substantially circular in form. The head H comprises a fixed jaw 1 which projects laterally from the body 2 of the head H. The body 2 is provided with a keyway 3 in which a key a, carried by a movable jaw 5, is slidably mounted, the adjustment of said jaw 5 being effected by means of a worm 6, revolubly mounted on a pin 7 within a recess 8 in the body 2, said worm co-acting with Specification of Letters Patent.

Application filed January 5, 1914.

Patented June 23, 1914. Serial No. 810,490.

1teeth 9 formed on the adjacent edge of the icy at.

An arm 10 projects laterally from the body 2 of the head H, and, as clearly shown in Figs. 2 and 3, the arm isinclined in such a direction as to bring its outer end sub stantially in alinement with the center of said head. A plurality of ratchet teeth 11 is formed on the periphery of the arm 10 near its outer end and said arm is provided with an extension 12 which is reduced as at 13, to form a shoulder, the'reduced portion 1% being threaded for the reception of a nut 15.

A handle 16, of any suitable construction, is provided with a head 17 which is recessed from edge to edge as at 18, the side walls of the recess being provided with bearing openings 19 and 20. As clearly shown in 3, the ratchet teeth 11 project loosely through the opening 19 and the largest. portion of the extension 12 passes loosely through the opening 20, the nut 15 being then threaded on the end ll and contacting with the shoulder 13. When in this position, the entire handle is free to swing around the teeth 11 and the extension 12 for a purpose to be described.

Pivotally mounted on transverse pins 21 projecting across the recess 18 are pawls 22, which are provided with ratchet engaging noses 23 on their upper ends with depending socketed lugs 24- below the pivots 21 and with inwardly extending fingers 25 which terminate a short distance from the radial center of the recess 18. A coil spring 26 has its opposite ends seated in the sockets in the lugs 24, said spring being employed to rock the pawls 22 around their pivots 21 for engaging their noses 23 with the ratchet teeth 11.

In order to allow but one of the pawls 22 to engage the teeth of the ratchet, I provide a pin 27 which is notched near its inner end as at 28 for a purpose to appear. The outer end of the pin is provided with an enlarged head 29 from which depends an operating finger 30. The pin 2'. projects through an opening in one side of the head 17 and is disposed in position relative to the ends of the arms 25, to allow its body portion 31 to contact with the inner faces of one ofthe fingers 25, while the arm on the opposite pawl will rest within the notch 28, thus allowing the last mentioned pawl to be rocked around its pivot by means of the oscillated to effect this movement.

spring 26 to engage its nose 23 with the ratchet teeth 11 when said pin 27 is rotated to a sufiicient degree. By this construction, it will be seen that' while one of the fingers 5 25 is free to move within the notch 28, the

' the pin 27 and the fingers 25, it will be seen that when the parts are in position, the pin 27 will be retained in place until the pawls 22 are rocked outwardly, thus raising the fingers 25 out of engagement with the notch 28, whereupon said pin may be easily removed.

I consider the provision of the arm 10 a very important feature of my invention, since, as illustrated in Fig. 2, should the end of a bolt project beyond the nut which is being screwed thereon, the handle 16 would not contact with the end thereof and the head H would thus be free to rotate entirely around the bolt, while the handle is being It will be clearly seen that the arm 10 also spaces the handle from the object through which the bolt asses, so that there is no danger of the fingers of the operator being injured by contact therewith.

From the foregoing description, taken in connection with the accompanying drawings, the construction and operation of the device will be clearly understood without a more extended explanation.

Having thus described my invention, What I claim as new and desire to secure by Letters-Patent is A wrench comprising nut engaging jaws, an arm extending therefrom and having ratchet teeth near its free end, a handle having a head provided with a recess and alined openings communicating therewith, said toothed arm extending through said open-- ings with the teeth thereof located in said recess, pawls pivoted intermediate of their ends in said recess and positioned to engage the teeth on the opposite sides of said arm,

a spring between said pawls, an operating pin projecting into said recess and having a notch in one side thereof, fingers pro ecting from said pawls in position to be forced into said notch by said spring when said pin is turned, and means for turning said pin.

In testimony whereof I have hereunto set my hand in presence of two subscribing wit-- IIGSSQS.

MARCUS C. HOOKER.

\Vitnesses CHARLES GURNow, O. M. McWHEs'rED.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

